GSC Power-Division Stainless Steel Exhaust Valves +1 2002-2014 WRX / 2004-2021 STI AC_2002-2007 WRX/STI leak-free fit throughout the filter’s

leak-free fit throughout the filter’s lifespan

and refill with the recommended 5W-30 viscosity

Upgrade your Subaru with the Enkei T6S Matte Black 18x9

professional installation is recommended if you prefer a flawless finish or if your vehicle requires additional modifications

GSC Power-Division Stainless Steel Exhaust Valves +1 2002-2014 WRX / 2004-2021 STI AC_2002-2007 WRX/STI leak-free fit throughout the filter’sGSC set out to create the best performance, longest lasting Subaru intake valves available to the aftermarket. Using advanced 3D design and simulation programs GSC created a stronger and higher flowing valve head design. GSC flow tests prototype valve heads to specific applications, making sure they have the highest flowing valve head available on the market today. The materials used by GSC have less valve distortion at the face than any of the tested